Add Quickfeather.

Co-authored-by: whitequark <whitequark@whitequark.org>
Co-Authored-By: Kamil Rakoczy <krakoczy@antmicro.com>
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
Signed-off-by: Jan Kowalewski <jkowalewski@antmicro.com>

Author: 3 people

nmigen_boards/quickfeather.py

@@ -0,0 +1,82 @@
+import os
+import sys
+import subprocess
+
+from nmigen.build import *
+from nmigen.vendor.quicklogic import *
+from nmigen_boards.resources import *
+
+
+__all__ = ["QuickfeatherPlatform"]
+
+
+class QuickfeatherPlatform(QuicklogicPlatform):
+    device      = "ql-eos-s3_wlcsp"
+    package     = "PU64"
+    default_clk = "sys_clk0"
+    # It is possible to configure both oscillator frequency and
+    # clock divider. Resulting frequency is: 60MHz / 12 = 5MHz
+    osc_freq    = int(60e6)
+    osc_div     = 12
+    connectors = [
+        Connector("J", 2, "- 28 22 21 37 36 42 40 7 2 4 5"),
+        Connector("J", 3, "- 8 9 17 16 20 6 55 31 25 47 - - - - 41"),
+        Connector("J", 8, "27 26 33 32 23 57 56 3 64 62 63 61 59 - - -"),
+    ]
+    resources   = [
+        *ButtonResources(pins="62"),
+
+        RGBLEDResource(0, r="34", g="39", b="38"),
+
+        UARTResource(0,
+            rx="9", tx="8",
+        ),
+
+        SPIResource(0,
+            cs="11", clk="20", copi="16", cipo="17"
+        ),
+        SPIResource(1,
+            cs="37", clk="40", copi="36", cipo="42",
+            role="peripheral"
+        ),
+
+        I2CResource(0,
+            scl="4", sda="5"
+        ),
+        I2CResource(1,
+            scl="22", sda="21"
+        ),
+
+        DirectUSBResource(0, d_p="10", d_n="14"),
+
+        Resource("swd", 0,
+            Subsignal("clk", Pins("54", dir="io")),
+            Subsignal("io",  Pins("53", dir="io")),
+        ),
+    ]
+
+    # This programmer requires OpenOCD with support for eos-s3:
+    # https://github.com/antmicro/openocd/tree/eos-s3-support
+    def toolchain_program(self, products, name):
+        openocd = os.environ.get("OPENOCD", "openocd")
+        with products.extract("{}.openocd".format(name),
+                              "{}_iomux.openocd".format(name)) as \
+                (bitstream_openocd_filename, iomux_openocd_filename):
+            subprocess.check_call([
+                openocd,
+                "-s", "tcl",
+                "-f", "interface/ftdi/antmicro-ftdi-adapter.cfg",
+                "-f", "interface/ftdi/swd-resistor-hack.cfg",
+                "-f", "board/quicklogic_quickfeather.cfg",
+                "-f", bitstream_openocd_filename,
+                "-c", "init",
+                "-c", "reset halt",
+                "-c", "load_bitstream",
+                "-f", iomux_openocd_filename,
+                "-c", "exit"
+            ])
+
+
+if __name__ == "__main__":
+    from .test.blinky import *
+    QuickfeatherPlatform().build(Blinky())